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Finding the Fourth Proportional to 482,909.72, 723,921.09 and 167,145.80

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Solution

The fourth proportional to 482,909.72, 723,921.09 and 167,145.80 is: 250,565.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,909.72 : 723,921.09 = 167,145.80 : x
  2. Step 2: Convert to fraction form
    482,909.72/723,921.09 = 167,145.80/x
  3. Step 3: Cross multiply
    482,909.72x = 723,921.09 × 167,145.80
  4. Step 4: Simplify right side
    482,909.72x = 121,000,366,105.32
  5. Step 5: Solve for x
    x = 121,000,366,105.32/482,909.72
  6. Step 6: Final answer
    x = 250,565.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.